708. You executed the following query:
select oldest_flashback_scn, oldest_flashback_time from v$flashback_database_log;
Considering that all the redo logs are available, what information can you derive from the output of the preceding query?
A.The time when the last flashback operation in your database was performed
B.The time when the first flashback operation in your database was performed
C.The approximate time and the lowest system change number (SCN) to which you can flash back your database
D.The system change number (SCN) and the time when the Flashback Database was enabled in the database instance
Answer:C
考虑到所有的重做日志是可用的，你可以从前面的查询的输出中得到什么信息？
数据库可以闪回的最小SCN和大概的时间。
select oldest_flashback_scn, oldest_flashback_time from v$flashback_database_log;
Considering that all the redo logs are available, what information can you derive from the output of the preceding query?
A.The time when the last flashback operation in your database was performed
B.The time when the first flashback operation in your database was performed
C.The approximate time and the lowest system change number (SCN) to which you can flash back your database
D.The system change number (SCN) and the time when the Flashback Database was enabled in the database instance
Answer:C
考虑到所有的重做日志是可用的，你可以从前面的查询的输出中得到什么信息？
数据库可以闪回的最小SCN和大概的时间。
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/81227/viewspace-2122347/ ，如需转载，请注明出处，否则将追究法律责任。
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